There are different kinds of emulator available, with those we can check/test before building the app. Through this process developer can easily and quickly test the final version before build.
Though there is an option of installing app on connected device, but for that we have to build app first, but if the emulator is there, developer can test their apps quickly.
Is there any option available or can it be made available in next version of SAB/RAB/DAB?
I use NOX emulator. Once I build the apk file locally, I tap on the file to open it in NOX for texting. This testing is necessary and also allows you to create the 2-8 screen shots that will be required to upload the apk file into the Google Play Store. NOX enables you to easily take screen shots to use in this process.
What other emulators might others recommend?
**** as with all downloaded software, be careful with NOX install that you do not inadvertently install other potentially bundled software. https://www.bignox.com/